CryptPad 1.1.1/3.0.0 Link Bouncer incomplete denylist to cross-site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in CryptPad. This affects an unknown function of the component Link Bouncer. The manipulation results in incomplete denylist to cross-site scripting. This vulnerability is identified as CVE-2025-49590. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in CryptPad. Affected is some unknown functionality of the component Link Bouncer. The manipulation with an unknown input leads to a incomplete denylist to cross-site scripting vulnerability. CWE is classifying the issue as CWE-692. The product uses a denylist-based protection mechanism to defend against XSS attacks, but the denylist is incomplete, allowing XSS variants to succeed. This is going to have an impact on integrity. CVE summarizes:

CryptPad is a collaboration suite. Prior to version 2025.3.0, the "Link Bouncer" functionality attempts to filter javascript URIs to prevent Cross-Site Scripting (XSS), however this can be bypassed. There is an "early allow" code path that happens before the URI's protocol/scheme is checked, which a maliciously crafted URI can follow. This issue has been patched in version 2025.3.0.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-49590 since 06/06/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 2025.3.0 eliminates this vulnerability. Applying the patch d5e4830ba104a4a442cb23aab5378b8565a95607 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18910). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Incomplete denylist to cross-site scripting
CWE: CWE-692 / CWE-79 / CWE-94
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CryptPad 2025.3.0
Patch: d5e4830ba104a4a442cb23aab5378b8565a95607

Timelineinfo

06/06/2025 🔍
06/19/2025 +13 days 🔍
06/19/2025 +0 days 🔍
08/12/2025 +53 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-vq9h-x3gr-v8rj
Status: Confirmed

CVE: CVE-2025-49590 (🔍)
GCVE (CVE): GCVE-0-2025-49590
GCVE (VulDB): GCVE-100-313266
EUVD: 🔍

Entryinfo

Created: 06/19/2025 07:36
Updated: 08/12/2025 01:51
Changes: 06/19/2025 07:36 (34), 06/19/2025 07:37 (34), 06/19/2025 11:01 (1), 06/23/2025 21:28 (1), 06/24/2025 02:38 (1), 08/12/2025 01:51 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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